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4 years ago

Josie sees lightning off in the distance. A few seconds later she hears thunder. What can Josie conclude?

Chemistry

2 answers:

PilotLPTM [1.2K]4 years ago

6 0

Light waves travel faster than sound waves

Marat540 [252]4 years ago

6 0

Light waves travel faster than sound waves.

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According to the iupac convention, alkyl substituents on a hydrocarbon chain should be listed in which order?

Scilla [17]

According to the IUPAC convention alkyl substituents on a hydrocarbon chain should be listed in alphabetical without considering prefixes order.

<h3>What is IUPAC convention?</h3>

IUPAC convention of organic chemistry is a method of naming organic chemical compounds as recommended by the International Union of Pure and Applied Chemistry (IUPAC).

The name of the compound is written out with the substituents in alphabetical order followed by the base name (derived from the number of carbons in the parent chain).

Types of IUPAC Nomenclature of a few important aliphatic compounds:

Alkane
Alkene
Alkyne

Example :

Ethane, which has 2 carbon atoms and 6 hydrogen atoms, with the molecular formula of = C₂H₆

Formation of alkyl group:

Methane (CH₄) Remove 1 hydrogen (H) convert to methyl (H₃-C-)

Example: Propyl (-CH₃ - CH₂ - CH₂ - )

According to the IUPAC convention alkyl substituents on a hydrocarbon chain should be listed in alphabetical without considering prefixes order.

Learn more about IUPAC convention, Here:

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8 0

2 years ago

Phenylpyruvic acid is produced in the body of abnormal amounts as the result of a molecular disease called phenylketonuria, whic

Andrej [43]

Answer:

6. C3H2O

Explanation:

C= 12.0107; H= 1.00797; O=15.9994

We calculate:

C= 65.85/12.01=5.48

H= 4.91/1.00=4.91

O=29.24/16.00= 1.82

Later, we divide among the smaller quantity

C=5.48/1.82= 3.01

H=4.91/1.82= 2.70

O=1.82/1.82=1

8 0

3 years ago

A neutralization reaction is a _________ replacement reaction that starts with an ________ and a __________ and ends with ______

Alexeev081 [22]

Answer:

Double, acid, base, water, salt.

Explanation:

The general reaction of a neutralization is:

X(OH) + YH → H₂O + XY

If you see, the reaction is a double replacement reaction because the cation and the anion of the two reactants switch places, forming two new compounds or products.

Always, the reaction starts with an acid and a base and will produce water and a salt.

I hope it helps!

5 0

3 years ago

Where would electrons in the d sublevel be found? Only in the n = 3 energy level in energy levels 3 possibly in any energy level

oksano4ka [1.4K]

<h3>Answer;</h3>

only in the n = 3 energy level

<h3>Explanation;</h3>

The atom of a chemical element is made up of sub-atomic particles which are the neutrons, protons and electrons. The neutrons and protons occupies the nucleus of an atom while the electrons occupy the energy levels.
The first energy level (n=1) of an atom occupies a maximum of two electrons because it has only an S-orbital which can only have two electrons.
The second energy level (n=2) can have a maximum number of 8 electrons, since it contains, one S- orbital which can hold two electrons, and a p-orbital which can accommodate six electrons.
The third energy level (n=3) can have a maximum number of 18 electrons, because it has the S-orbitals which holds 2 electrons, the p-orbital which holds 6 electrons and the d-orbital which holds 10 electrons.

5 0

4 years ago

The diagram shows a simple model of an event that is part of the rock cycle. image Which type of event is most likely occurring

Bezzdna [24]

Answer: D. the hardening of liquid magma that leads to igneous rock

Explanation:

5 0

3 years ago